My motor locked up again. I am not sure whats wrong this time. It was running OK at the track, and on the last lap of practice, clunk. It just locked up. It will not turn over, it will go in and out of gear, the sparkplug is not torn up, no oil leaking anywhere. hmm Plenty of oil. I am dreading how much it will cost this time. I am thinking of taking it to Legacy and let them build it. I guess modded 4 strokes aint for me.